Pagwin/cs440-assignment3
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I'm to tired to figure out how to get the base and derived class configured to work properly much less the pointer casts

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Pagwin 2024-12-13 22:46:36 -05:00
parent d90f19f897
commit 12d0c45322
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GPG key ID: 81137023740CA260
1 changed files with 5 additions and 2 deletions
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7
SharedPtr.hpp
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@ -16,7 +16,7 @@ template <typename T> struct Base {
T *ptr; T *ptr;
Base(T *ptr) : ptr{ptr} {} Base(T *ptr) : ptr{ptr} {}
template <typename U> Base(Base<U> const &ptr) : ptr{ptr.ptr} {} template <typename U> Base(Base<U> &ptr) : ptr{ptr.ptr} {}
public: public:
virtual T &operator*() { return *ptr; } virtual T &operator*() { return *ptr; }
@ -28,6 +28,7 @@ template <typename T, typename U> class MyDerived : public Base<T> {
public: public:
MyDerived(U *ptr) : Base<T>{ptr} { this->ptr = ptr; } MyDerived(U *ptr) : Base<T>{ptr} { this->ptr = ptr; }
MyDerived(Base<U> &ptr) : Base<T>{ptr.ptr} { this->ptr = ptr.ptr; }
U &operator*() { return *ptr; } U &operator*() { return *ptr; }
U *operator->() { return ptr; } U *operator->() { return ptr; }
virtual ~MyDerived() { delete this->ptr; } virtual ~MyDerived() { delete this->ptr; }
@ -46,7 +47,9 @@ public:
static_cast<std::size_t>(ptr ? 1 : 0)}} {} static_cast<std::size_t>(ptr ? 1 : 0)}} {}
SharedPtr(const SharedPtr &p) : ptr{p.ptr}, count{p.count} {} SharedPtr(const SharedPtr &p) : ptr{p.ptr}, count{p.count} {}
template <typename U> template <typename U>
SharedPtr(const SharedPtr<U> &p) : ptr(p.ptr), count{p.count} { SharedPtr(const SharedPtr<U> &p)
: ptr(MyDerived<U, T>(const_cast<cs440::Base<U> &>(*p.ptr))),
count{p.count} {
(*count)++; (*count)++;
} }
SharedPtr(SharedPtr &&p) : ptr{p.ptr} { p.ptr = nullptr; } SharedPtr(SharedPtr &&p) : ptr{p.ptr} { p.ptr = nullptr; }